Every second counts in a tri, but speed is arguably the most important on the bike leg. Average a few tenths of a mile per hour slower than the rider you're chasing and it'll add up in the end. Whether you're upgrading from aluminum or just diving into the world of aerobars, clip ons like Profile Design's T5 Aero Handlebars keep setup simple with a focus on high performance and customization. Add them to your race setup to get your road bike on an even playing field with the tri bikes and riders you'll be competing against.The T5 is made using vibration dampening carbon throughout the basebars and extensions to give you a lighter, less jarring ride. Almost completely straight, the aggressive extensions include a slight 15 degree ski bend at the end for more comfortable hand positioning, and use a single bolt system to keep length and rotation adjustments straightforward. The brackets, Profile Design's patent pending J4 model, are constructed with 6061 T6 aluminum and work as part of an in line wedge system that aims to improve aerodynamics. The padded F 35a aluminum armrests take a cue from the other adjustable components on the T5, and were designed with three foreaft positions, 30mm of adjustment, and 15 degrees of rotation for fine tuning the fit throughout your racing season. These clip on bars will fit onto handlebars with either a 26. 0mm or 31. 8mm diameter, and weigh about 575g.